85852383 ÷ 21 
We want to figure out the number of times 85852383 can be divided by 21.

Going ahead to step 1:
The number 21 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 21

Let's proceed to step 2:
If we divide 85 by 21, we get 4 and a remainder of 1.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we take 84 away from 85, we end up with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 21

Going ahead to step 3:
When dividing 18 by 21, we get 0 with a remainder of 18.
Use 0 as the next digit of our solution. 
Result so far: 40.0
Subtracting 0 from 18 leaves us with 18.
Take the next digit (5) from the dividend and append it to 18, then repeat: 185 / 21

Step 4:
If we divide 185 by 21, we get 8 and a remainder of 17.
The number 8 becomes the next digit in our result. 
Result so far: 408.0
Deduct 168 from 185 and we're left with 17.
Take the next digit (2) from the dividend and append it to 17, then repeat: 172 / 21

Step 5:
21 goes into 172 8 times with a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 4088.0
Deduct 168 from 172 and we're left with 4.
Append the next digit (3) from the dividend to 4 and continue with: 43 / 21

Going ahead to step 6:
If we divide 43 by 21, we get 2 and a remainder of 1.
Use 2 as the next digit of our solution. 
Result so far: 40882.0
Subtracting 42 from 43 leaves us with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 21

On to step 7:
21 can be fit into 18 0 times, resulting in a remainder of 18.
Use 0 as the next digit of our solution. 
Result so far: 408820.0
If we subtract 0 from 18, we get 18.
Fetch the next digit (3) from the dividend, attach it to 18 and continue: 183 / 21

Step 8:
When dividing 183 by 21, we get 8 with a remainder of 15.
Write down 8 as next digit of the result. 
Result so far: 4088208.0
Subtracting 168 from 183 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 9:
21 goes into 150 7 times with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 4088208.7
Subtracting 147 from 150 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 10:
The number 21 fits into 30 1 times, leaving a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 4088208.71
Subtract 21 from 30 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 11:
When dividing 90 by 21, we get 4 with a remainder of 6.
The next digit of our result is 4. 
Result so far: 4088208.714
Deduct 84 from 90 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 12:
21 goes into 60 2 times with a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 4088208.7142
If we subtract 42 from 60, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 13:
When dividing 180 by 21, we get 8 with a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 4088208.71428
If we subtract 168 from 180, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 14:
When dividing 120 by 21, we get 5 with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 4088208.714285
If we take 105 away from 120, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 15:
21 goes into 150 7 times with a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 4088208.7142857
If we subtract 147 from 150, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 16:
30 divided by 21 is 1 with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 4088208.71428571
Deduct 21 from 30 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

The quotient of the division is 4088208.71428571, and the remainder is 9e-09.